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The Dynamics of Complex Formation between Amy lose Brushes on Gold and Fatty Acids by QCM-D

Amy lose brushes were synthesized by enzymatic polymerization with glucose-l-phosphate as monomer and rabbit muscle phosphorylase b as catalyst on gold-covered surfaces of a quartz crystal microbalance. Fourier transform infrared (FT-IR) spectra confirmed the presence of the characteristic absorptio... Full description

Journal Title: Biomacromolecules 2013, Vol.14(10), pp.3713-3722
Main Author: Cao, Zheng
Other Authors: Tsoufis, Theodoros , Svaldo-Lanero, Tiziana , Duwez, Anne-Sophie , Rudolf, Petra , Loos, Katja
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: ; ISSN: 1525-7797
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recordid: narcisrug:oai:pure.rug.nl:publications/996c8854-7660-49f3-8682-f0ef99928155
title: The Dynamics of Complex Formation between Amy lose Brushes on Gold and Fatty Acids by QCM-D
format: Article
creator:
  • Cao, Zheng
  • Tsoufis, Theodoros
  • Svaldo-Lanero, Tiziana
  • Duwez, Anne-Sophie
  • Rudolf, Petra
  • Loos, Katja
subjects:
  • Quartz-Crystal Microbalance
  • Self-Assembled Monolayers
  • Amylose-Lipid Complexes
  • Inclusion Complexes
  • Physicochemical Properties
  • Enzymatic Polymerization
  • Temperature Treatment
  • Starch
  • Iodine
  • Films
ispartof: Biomacromolecules, 2013, Vol.14(10), pp.3713-3722
description: Amy lose brushes were synthesized by enzymatic polymerization with glucose-l-phosphate as monomer and rabbit muscle phosphorylase b as catalyst on gold-covered surfaces of a quartz crystal microbalance. Fourier transform infrared (FT-IR) spectra confirmed the presence of the characteristic absorption peaks of amylose between 3100 cm(-1) and 3500 cm(-1). The thickness of the amylose brushes-measured by Spectroscopic Ellipsometry-can be tailored from 4 to 20 nm, depending on the reaction time. The contour length of the stretched amylose chains on gold surfaces has been evaluated by single molecule force spectroscopy, and a total chain length of about 20 nm for 16.2 nm thick amylose brushes was estimated. X-ray photoelectron spectroscopy (XPS) was employed to characterize the amylose brushes before and after the adsorption of fatty acids. The dynamics of inclusion complex formation between amylose brushes and two fatty acids (octanoic acid and myristic acid) with different chain length was investigated as a function of time using a quartz crystal microbalance with dissipation monitoring (QCM-D) immersed in the liquid phase. QCM-D signals including the frequency and dissipation shifts elucidated the effects of the fatty acid concentration, the solvent types, the chain length of the fatty acids and the thickness of the amylose brushes on the dynamics of fatty acid molecule adsorption on the amylose brush-modified sensor surfaces.
language: eng
source:
identifier: ISSN: ; ISSN: 1525-7797
fulltext: fulltext_linktorsrc
issn:
  • 1525-7797
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titleThe Dynamics of Complex Formation between Amy lose Brushes on Gold and Fatty Acids by QCM-D
creatorCao, Zheng ; Tsoufis, Theodoros ; Svaldo-Lanero, Tiziana ; Duwez, Anne-Sophie ; Rudolf, Petra ; Loos, Katja
contributorZernike Institute for Advanced Materials ; Polymers at Surfaces and Interfaces ; Macromolecular Chemistry & New Polymeric Materials ; Surfaces and Thin Films
ispartofBiomacromolecules, 2013, Vol.14(10), pp.3713-3722
identifierISSN: ; ISSN: 1525-7797
subjectQuartz-Crystal Microbalance ; Self-Assembled Monolayers ; Amylose-Lipid Complexes ; Inclusion Complexes ; Physicochemical Properties ; Enzymatic Polymerization ; Temperature Treatment ; Starch ; Iodine ; Films
descriptionAmy lose brushes were synthesized by enzymatic polymerization with glucose-l-phosphate as monomer and rabbit muscle phosphorylase b as catalyst on gold-covered surfaces of a quartz crystal microbalance. Fourier transform infrared (FT-IR) spectra confirmed the presence of the characteristic absorption peaks of amylose between 3100 cm(-1) and 3500 cm(-1). The thickness of the amylose brushes-measured by Spectroscopic Ellipsometry-can be tailored from 4 to 20 nm, depending on the reaction time. The contour length of the stretched amylose chains on gold surfaces has been evaluated by single molecule force spectroscopy, and a total chain length of about 20 nm for 16.2 nm thick amylose brushes was estimated. X-ray photoelectron spectroscopy (XPS) was employed to characterize the amylose brushes before and after the adsorption of fatty acids. The dynamics of inclusion complex formation between amylose brushes and two fatty acids (octanoic acid and myristic acid) with different chain length was investigated as a function of time using a quartz crystal microbalance with dissipation monitoring (QCM-D) immersed in the liquid phase. QCM-D signals including the frequency and dissipation shifts elucidated the effects of the fatty acid concentration, the solvent types, the chain length of the fatty acids and the thickness of the amylose brushes on the dynamics of fatty acid molecule adsorption on the amylose brush-modified sensor surfaces.
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titleThe Dynamics of Complex Formation between Amy lose Brushes on Gold and Fatty Acids by QCM-D
descriptionAmy lose brushes were synthesized by enzymatic polymerization with glucose-l-phosphate as monomer and rabbit muscle phosphorylase b as catalyst on gold-covered surfaces of a quartz crystal microbalance. Fourier transform infrared (FT-IR) spectra confirmed the presence of the characteristic absorption peaks of amylose between 3100 cm(-1) and 3500 cm(-1). The thickness of the amylose brushes-measured by Spectroscopic Ellipsometry-can be tailored from 4 to 20 nm, depending on the reaction time. The contour length of the stretched amylose chains on gold surfaces has been evaluated by single molecule force spectroscopy, and a total chain length of about 20 nm for 16.2 nm thick amylose brushes was estimated. X-ray photoelectron spectroscopy (XPS) was employed to characterize the amylose brushes before and after the adsorption of fatty acids. The dynamics of inclusion complex formation between amylose brushes and two fatty acids (octanoic acid and myristic acid) with different chain length was investigated as a function of time using a quartz crystal microbalance with dissipation monitoring (QCM-D) immersed in the liquid phase. QCM-D signals including the frequency and dissipation shifts elucidated the effects of the fatty acid concentration, the solvent types, the chain length of the fatty acids and the thickness of the amylose brushes on the dynamics of fatty acid molecule adsorption on the amylose brush-modified sensor surfaces.
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